Corn Plant Brown Tips: Light Distance and Overwatering

Your corn plants are 25 ft from the nearest window—light intensity drops drastically with distance. They need to be within 6 ft of an uncovered window.

Also:

• Repotting 10″→11″ was unnecessary; remove added soil from top of root ball.
• Watering every 9–10 days is too frequent—let top 2 inches dry.

Priority 1: Move close to bright window. Priority 2: Water less. Everything else is secondary.